Prusa i3/zh cn
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Release status: working
Description | Prusa i3 is a redesign by Prusajr.
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Contents
Introduction
Prusa第三代是由RepRap核心团队Prusajr所设计的目前最新的3D打印机,它参考和借鉴了前两代的Prusa和其他RepRap打印机。
Specifications
- Printed Parts: ???
- Non-Printed Parts: ???
- Material Cost: ???
- Cost: ???
- Printing Size: ??mm x ??mm x ??mm
- Precision: ??mm (position/printing)
- Speed: ??cm/s (position/printing)
主要改进
以下的改进是相对于上一代的Prusa而言(即Prusa i2)
- 框架变得更加结实 (prevents x backlash)
- 更容易组装
- 参数化的原文件,方便组装不同大小的Prusa i3,且适应不同尺码的轴承
开发相关
Prusa Mendel 的开发进程与各种文件都在这个网址 github: https://github.com/josefprusa/Prusa3.
History
打印件部分
组装所需要的STL文件可在这里找到Clone_wars:_Prusa_iteración_3.
你可以用一下文件进行编译 [[2]] (box style files) [[3]] (Singel sheet style) 你需要复制 configuration.scad.dist 到 configuration.scad 然后完成客制化选项(就是填写各种参数)
RP every .scad in this directory (except complete-printer) once.
Aim for 0.3mm layers and 2.2 extrusion width (width over thickness),
for 0.66mm stroke width. Printer is tested at this setting.
Using doc/complete-printer.scad as a visual clue and doc/manual.txt as a guide, build the printer.
Frame type
There are two major Prusa i3 Frame Styles, the Single Sheet Frame, and the Box Style Frame. The Single Sheet Frame is designed to be manufactured through the use of a Laser cutter, WaterJet, or CNC Mill / Router Table. There are two current development tracks within the Single Sheet Frame, an Aluminium frame style, and a gusseted Wood frame style. Both are designed to support 6mm or thicker framing material. The Box Style Frame is designed to be easily manufactured at home with basic woodworking tools. The Y-axis for both frame styles is similar to that of the older Prusa Mendel Iteration 2.
Single Sheet Frame
This is a frame created from a single sheet of metal, typically Aluminum, but can also be made from various Materials with a thickness greater than 6mm / 0.25 inch
pro:
- Looks professional (subjective)
con:
- requires specialised tools (e.g. Water flow jet cutter)
- Less rigid connection between XZ-frame and Y-frame part
Box Style Frame
This frame is created created from 8 small sheets of wood.
pro:
- Can be created with standard DIY tools
- More rigid connection between XZ-frame and Y-frame part
con:
- Looks less professional (subjective)
Electronics
Stepper Motors
The Prusa i3 uses, including the extruder, 5 NEMA17 stepper motors. Two of these motors, the Z axis motors, are connected to the same stepper driver of the electronics. If using Wade's Extruder, its stepper motor needs a minimum holding torque of 40Ncm (0.4Nm). More information can be found on the Stepper Motor page.
Controller Electronics
About any RepRap controller works for the Prusa i3. Required features: 4 stepper drivers, 1 thermistor input and 1 heater output for the extruder and optionally another thermistor/heater pair for the heated bed. Choosing the best one for your printer is mostly a matter of taste. For comparisons, see List of electronics, Comparison of Electronics and Alternative Electronics.
Extruder
On November 12th, 2012 Josef Prusa (@josefprusa) tweeted a picture of his metal frame i3 with a custom dual extruder mounted.
//Need name, info, and link to this extruder and how to build it. Can anyone help? -idolcrasher
Previous posts on Prusa's twitter feed reveal that Sound (Slic3r's Developer) inspired Prusa to attach a dual extruder.
Heated Bed
Filament Holder
Here you can find some ways how to place the filament spool to the printer
TODO list some ways